Importance of sleep and nutrition for improved recovery.

The idea

Recovery after training or injury depends on sleep and nutrition. Sleep allows growth hormone release, tissue repair and nervous-system restoration; most adolescents need roughly 8–10 hours per night, and athletes may benefit from more. Nutrition supplies energy and building blocks: carbohydrate replenishes muscle and liver glycogen, protein provides amino acids for muscle protein synthesis, and fluid with electrolytes restores hydration and blood volume. Micronutrients such as calcium and vitamin D support bone remodelling, while iron supports oxygen transport. Poor sleep or inadequate energy, protein or fluid intake slows repair, increases fatigue and raises re-injury risk. A performer should therefore treat sleep and nutrition as planned parts of rehabilitation, not optional extras.

What earns the marks

• Sleep supports tissue repair and growth hormone release, aiding recovery from training or injury.
• Most adolescents need approximately 8–10 hours of sleep per night, and athletes may require more.
• Carbohydrate replenishes muscle and liver glycogen stores after exercise.
• Protein provides amino acids for muscle protein synthesis and repair.
• Fluid and electrolytes restore hydration and blood volume after sweating.
• Calcium and vitamin D support bone remodelling and repair.
• Iron supports oxygen transport and energy production.
• Inadequate sleep or nutrition slows repair, increases fatigue and raises re-injury risk.

Common mistakes and how to put them right

• Thinking sleep is only for feeling rested.

  Put it right by explaining that sleep also drives growth hormone release and tissue repair.

• Believing any food is adequate for recovery.

  Put it right by specifying carbohydrate for glycogen, protein for muscle repair, and fluid with electrolytes for rehydration.

• Assuming supplements replace a balanced diet.

  Put it right by stating that whole foods and adequate energy intake form the foundation, with supplements only filling specific gaps.

• Ignoring the role of micronutrients.

  Put it right by naming calcium and vitamin D for bone remodelling and iron for oxygen transport.

Exam tips

• Link each recovery factor to a specific physiological process, such as glycogen resynthesis or muscle protein synthesis.
• Use approximate figures where appropriate, for example 8–10 hours of sleep for adolescents, rather than vague statements.
• When a question asks about recovery, address both sleep and nutrition to cover the full statement.